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- Schoenoplectus americanus (Pers.) Volkart ex Schinz & R. Keller – Chairmaker's bulrush, Olney's bulrush – Much of Western Hemisphere from Alaska to Argentina including West Indies; also New Zealand
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Schoenoplectus americanus (Pers.) Volkart ex Schinz & R. Keller – Chairmaker's bulrush, Olney's bulrush – Much of Western Hemisphere from Alaska to Argentina including West Indies; also New Zealand; Schoenoplectus annamicus (Raymond) T.Koyama – Vietnam; Schoenoplectus californicus Steud.
Schoenoplectus includes some difficult species complexes, each with different ranges outside of North America, that are discussed under the first species in each complex. The four sections recognized here were delineated by S. G. Smith and E. Hayasaka (2001). About ten species from eastern Asia and Africa have not yet been assigned to a section.
Schoenoplectus heterochaetus: sppikelets all or mostly single at the ends of the pedicels, floral scales ecilite along the margin, and achenes trigonous in cross-section, with mostly 4 (vs. S. acutus, with spikelets all or mostly in glomerules of 2–7 at the ends of the pedicels, floral scales ciliate, at least near the apex, and achenes plano ...
The Schoenoplectus americanus alliance occurs in many wetlands throughout the western United States and the southern Great Plains (NatureServe 2007a). Stands have a high organic-matter accumulation from extensive root/rhizome systems (Shupe et al. 1986, Ungar 1965).
Facts. Weak-stalked bulrush inhabits pond shores and temporary pools in all New England states. There are two varieties, one of which is common and widespread (Schoenoplectus purshianus var. purshianus), the other (S. purshianus var. williamsii) being known from only a single population in Massachusetts.
Schoenoplectus acutus and/or Schoenoplectus californicus is dominant or co-dominant in the herbaceous layer with Apocynum cannabinum, Azolla filiculoides, Bolboschoenus maritimus, Calystegia sepium, Eichhornia crassipes, Euthamia occidentalis, Hibiscus lasiocarpos, Hoita macrostachya, Hydrocotyle ranunculoides, Leersia oryzoides, Ludwigia peploides, Lycopus americanus, Persicaria punctata ...
The highest mountain in the Western Hemisphere is Aconcagua in the Andes of Argentina at 6,960.8 m (22,837 ft). The tallest freestanding structure in the Western Hemisphere is the CN Tower in Toronto at 553.3 m (1,815 ft) and the tallest building in the Western Hemisphere is One World Trade Center in New York City at 541.3 m (1,776 ft).
